Thank you very much for explaining your opinion in detail. I just downloaded Train smart by Pete Sisco and will read it during the next days. Maybe there is something to learn.
I train every muscle once a week in only 2 training sessions. 1st is arms and legs and second is chest, beck, shoulder and calves. It is not optimal but I just do not have time (Baby, girlfriend, work) to split the body parts on more sessions.
I give you a feedback about the book,

Welcome Sir! I was born in Peckham, South London so it's great to see another Londoner you seem to train similar to me but I do one set to failure each body part and I do it all in one day! so I can get plenty of rest, I like to train close to my max wieght so I need that rest, I also like to eat so resting and eating is my luxury right now anyway have a great time on this great list!!!